Testing reception

Alexander Chemeris alexander.chemeris at gmail.com
Sat Jul 21 16:09:12 UTC 2012

Andrey Sviyazov,

You wanted to know how to plot received signal under Windows without
installing Matlab or something as big and as expensive. Dmitri
Stolnikov recommended to use a free version of Signals Analyzer
software which should be very powerful. You could download it as "SA
free" here:

Dmitri says that the free version of SA could only import .wav files,
so you will need to convert raw files into .wav files. My preferred
way to do this is to use 'sox' command line utility like that:
sox -r 270833 -e signed -b 16 -c 2 record.cfile record.wav

Windows binaries of 'sox' is available from the official web-site:

Alexander Chemeris.
CEO, Fairwaves LLC / ООО УмРадио

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